Cell part powerpoint
Transcript of Cell part powerpoint
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Living Environment
Mrs. Giacomin
Cell Structures and Functions
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Cell Membrane• Outer membrane of a cell• Controls the transport of
materials into and out of the cell
• Double layered structure made of lipids, carbohydrates and proteins
• Semi-permeable (can select what molecules go in or out of a cell)
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Nucleus• Controls all cell activities
• Called the “brain” of the cell
• Where chromosomes are located (DNA)
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Nuclear MembraneOuter layer of the nucleus
Controls what passes into or out of the nucleus
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NucleolusFound inside the nucleus
Where ribosomes are made
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CytoplasmGel between the nucleus
and the cell membrane
Where cell organelles are located
Where most chemical reactions take place
Looks like Jell-O
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MitochondriaInvolved in cellular
respiration
Where energy is released for the cell
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Endoplasmic ReticulumSystem of channels or
canals that transport materials throughout the cell
Chemical reactions take place on the surface
Can have rough or smooth surface - rough surface is due to ribosomes
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Golgi ApparatusA stack of membrane-
bounded channels and vacuoles
They synthesize (make), package and secrete cell products
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RibosomesMake proteins from amino
acids
May be attached to the endoplasmic reticulum or may be in the cytoplasm
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ChloroplastsInvolved in the
manufacture of food (photosynthesis)
Found only in plant cells
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LysosomesMembrane-bounded sacs
Contain digestive enzymes
Involved in food digestion in one-celled animals
Destroy damaged or old cell parts in multi-cellular animals
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VacuolesSac-like structures used
by the cell to store food, water and wastes
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CentriolesFound in animal cells
Involved in cell division
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Cell WallOuter layer of a plant cell
Supports and protects plant cells
Made up of cellulose (carbohydrate)